Delivering a Critical Raw Water Transmission Line Using Design-Build: The Perspective from Gilbert, AZ

2012 ◽  
Author(s):  
Glen W. Roth ◽  
Jeff Kramer
Keyword(s):  
Transmission Line ◽  
Raw Water ◽  
Design Build ◽  
Water Transmission

Potential for manganese biofouling in water transmission lines using model reactors

2018 ◽  
Vol 4 (6) ◽  
pp. 761-772 ◽  
Author(s):  
Nicole E. Allward ◽  
Brittany S. Gregory ◽  
Amina K. Sotddart ◽  
Graham A. Gagnon
Keyword(s):  
Water Supply ◽  
Transmission Line ◽  
Manganese Oxide ◽  
Transmission Lines ◽  
Water Transmission

Biologically mediated manganese oxide accumulation was observed in a water supply plant transmission line. A novel, putative manganese oxidizing bacterium,Candidatus Koribacter, was identified.

FRESH WATER SPONGES IN RAW-WATER TRANSMISSION LINES

1969 ◽  
Vol 61 (9) ◽  
pp. 473-475
Author(s):  
D. L. King ◽  
A. D. Ra ◽  
J. L. Tuepker
Keyword(s):  
Fresh Water ◽  
Transmission Lines ◽  
Raw Water ◽  
Water Transmission

scholarly journals Reducing the Effects of Water Hammer Phenomenon in Pipelines by Changing the Closing Rate of Line Break Valve (LBV)

2021 ◽  
Author(s):  
Mohammad Reza Boroomand ◽  
◽  
Nasim Safar Razavizadeh ◽  
Ahmad Eshghi ◽  
◽  
...  
Keyword(s):  
Transmission Line ◽  
Initial Conditions ◽  
Saline Water ◽  
Flow Analysis ◽  
Flow Simulation ◽  
Environmental Hazards ◽  
Water Hammer ◽  
Air Chamber ◽  
Water Transmission ◽  
Closing Rate

Line break valves in pipelines are using to prevent environmental hazards caused by the entry of the fluid into the surrounding. The operation of these valves leads to sudden changes in pressure and velocity, resulting in the occurrence of the water hammer phenomenon. The water hammer pressure will cause serious problems such as the destruction of pipelines and transmission line equipment and tools. Due to the salinity of water, when a fracture occurs, the amount of water that enters the surrounding is environmentally essential, so the use of several LBVs is vital. This paper investigated a water transmission line with a total length of 337 km that transfers saline water from Khoor Moosa to Azadegan plain. This study discussed the closing of the valve at different rates and the solution to reduce its destructive effects. WaterGEMS V8i software and Hammer V8i software are respectively using to perform a steady flow simulation and damping flow analysis for this phenomenon. The results obtained from the steady-state flow simulation is the initial conditions in the damping flow calculations. Then, by reducing the closing rate of the valve in 6 different scenarios, the volume of air chambers decreased. Finally, the results led to creating a linear relationship between the valve closing rate and the capacity of the air chamber. The optimal model for this rate depends on reducing the construction cost as well as the environmental hazards caused by discharged water.

Performance evaluation of some fusion-bonded epoxy coatings under water transmission line conditions

2008 ◽  
Vol 62 (4) ◽  
pp. 369-375 ◽  
Author(s):  
M. Mobin ◽  
A.U. Malik ◽  
I.N. Andijani ◽  
F. Al-Muaili ◽  
M. Al-Hajri ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Transmission Line ◽  
Epoxy Coatings ◽  
Water Transmission

Behavior of nuisance mussel, Limnoperna fortunei, in water supply facilities

2002 ◽  
Vol 46 (11-12) ◽  
pp. 45-50 ◽  
Author(s):  
Y. Goto
Keyword(s):  
Water Supply ◽  
Pipe Wall ◽  
Raw Water ◽  
Limnoperna Fortunei ◽  
Foreign Origin ◽  
Major Incidents ◽  
Water Transmission ◽  
One Year ◽  
First Time ◽  
Water Passage

Limnoperna fortunei, a species of bivalve of foreign origin, was confirmed to exist in Japan for the first time in 1992. It was found in some facilities of Hanshin Water Supply Authority in 1994. Later, it was found to cause various problems such as clogging of sampling pipes. Following this finding, research was initiated to investigate the possibility of its causing major incidents of bio-fouling such as total blockage of water passage by adhering to the raw water transmission pipe wall in massive numbers. As a result, it was found that Limnoperna fortunei was spawned in summer and grew up to 20 mm in size by the end of a one-year period when it began to die out and became detached immediately. Therefore, it was concluded that no deliberate efforts to remove them are required to avoid major problems

The Value of Value Engineering—Functionality without Breaking the Bank on a Raw Water Transmission Project in Texas

2015 ◽  
Author(s):  
Matt Gaughan ◽  
Janis Murphy ◽  
William L. Wallace ◽  
Ed Weaver
Keyword(s):  
Value Engineering ◽  
Raw Water ◽  
Water Transmission
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